The British supermodel's nine-year-old Offspring Lila Grace - whose father is Kate's former boyfriend Jefferson Hack - and her friend Iris Law, 11, love working together on their own photoshoots.

Iris - whose parents are Kate's friends Sadie Frost and Jude Law - told aMUSE: ''My god-sister, Lila, and I have gotten into the habit of creating little photo shoots every time we see each other. I enjoy this, because it's everything I love in one go; it's creative, it makes you think- it's fashion.''

Lila and Iris' passion for fashion could be traced back to Kate as when the older girl turned nine in 2009, the 38-year-old beauty threw a model-themed birthday party for her.

A source said at the time: ''Kate had been teaching Iris and Lila Grace how to model and how to walk the catwalk properly in preparation for the party.

''They could hardly have a better teacher.

''All of the girls at the bash wanted to be Kate. She brought along lots of clothes for them and the girls had their hair and make-up done especially.

''Kate also presided over all of the accessories to make them look as catwalk-ready as possible. She was teaching them how to master her famous hip swagger and her 'I don't care look'.

''It went down so well that Iris and Lila Grace now both want to be models like Kate.''